Re: Weblogic compliant JCA Connector implementation?

If anyone cares, it looks like adding a fake interaction that just
returns the webdav connection gets around the class cast exception in
WLS 7:

public class WebDAVInteraction implements Interaction {

	private WebDAVConnection conn=null;
	
	/**
	 * The constructor.
	 * @param wconn the connection
	 */
	public WebDAVInteraction(WebDAVConnection wconn) {
		conn=wconn;
	}
	
	/* (non-Javadoc)
	 * @see javax.resource.cci.Interaction#clearWarnings()
	 */
	public void clearWarnings() throws ResourceException {
		
	}

	/* (non-Javadoc)
	 * @see javax.resource.cci.Interaction#close()
	 */
	public void close() throws ResourceException {
		conn=null;
	}

	/* (non-Javadoc)
	 * @see javax.resource.cci.Interaction#execute(javax.resource.cci.InteractionSpec,
javax.resource.cci.Record)
	 */
	public Record execute(InteractionSpec arg0, Record arg1)
			throws ResourceException {
		return null;
	}

	/* (non-Javadoc)
	 * @see javax.resource.cci.Interaction#execute(javax.resource.cci.InteractionSpec,
javax.resource.cci.Record, javax.resource.cci.Record)
	 */
	public boolean execute(InteractionSpec arg0, Record arg1, Record arg2)
			throws ResourceException {
		return false;
	}

	/* (non-Javadoc)
	 * @see javax.resource.cci.Interaction#getConnection()
	 */
	public Connection getConnection() {
		return this.conn;
	}

	/* (non-Javadoc)
	 * @see javax.resource.cci.Interaction#getWarnings()
	 */
	public ResourceWarning getWarnings() throws ResourceException {
		return null;
	}

}


You then have to change the connection's createInteraction method as follows:

 public Interaction createInteraction() throws ResourceException {
        return new WebDAVInteraction(this);
    }


To get around the proxy class, the end user's code then just calls to get:

conn.createInteraction().getConnection()

to get a hold of the WebDAVConnection.

This work around probaly shouldn't be work, I'd expect WLS to have a
proxy for the Interation to prevent itcould let you close the
underlying connection while WLS still thinks it's open which would
obviously be bad. :)

Anyways, I hope this helps anyone else who might need it.

thanks,

matt


On 8/22/06, Matthew Roland <[email protected]> wrote:
> I'm trying to develope an application using your JCA connector on
> weblogic and was wondering if you guys actually ahve any intention of
> releasing a more complete implementation?
>
> Based on the example and the source I've looked through there are a
> number of problems with this implementation:
>
> 1) You assume that the container won't place a proxy class in front of
> the connection returned by the connection factory. As this is not the
> case for weblogic 7, I'm not able to get a hold of the
> WebDAVConnection object and therefore can't call getWebdavResource().
> For example:
>
> final WebDAVConnectionSpec spec = new WebDAVConnectionSpec(httpUrl, TIMEOUT);
> final WebDAVConnection conn = (WebDAVConnection)factory.getConnection(spec);
>
> throws:
> java.lang.ClassCastException: $Proxy139
>         at org.xign.invoicebackoffice.common.authentidate.AuthentidateSigningUtil.getWebdavResource(AuthentidateSigningUtil.java:274)
>
> 2) I shouldn't be specifying the connect information in the code, this
> should be in the ra.xml (the host address at least, optionally the
> user and password information too).
>
> 3) You don't define any interactions / records which given (1)
> prevents a weblogic developer from using the JCA implementation unless
> they define their own (which is I guess what I'll be doing).
>
> Anyways, don't know if anyone is working on these items. But thought
> I'd mention them...
>
> thanks,
>
> Matt